Exhibit | Aug. 4, 2021

VINSON (KY-57)

This device provided secure radio communications through scrambling and was the follow-on to the NESTOR (KY-38). The device was used by U.S. and allied military and law enforcement. The descrambling keys were distributed on paper tape and loaded into the key tape readers. The device provided tactical secure voice and data on UHF and VHF line of sight, UHF SATCOM networks and tactical phone systems. When a key was turned, communications switched from unclassified to classified. It was replaced in 1993.